Whether blocking  the calls is sufficient? Courtesy BS

Simply blocking phone numbers on mobile devices will not stop spam calls, and subscribers should instead report them through the Trai DND app, the telecom regulator said on Monday.

The Telecom Regulatory Authority of India (Trai) said it has disconnected and blacklisted more than 21 lakh mobile numbers and around one lakh entities involved in sending spam and fraudulent messages based on subscribers’ complaints registered on the DND app.

This large-scale action was made possible because citizens reported spam through the official Trai DND app. When a user reports a spam call or SMS on the TRAI DND App, it allows Trai and telecom service providers to trace, verify, and permanently disconnect the mobile numbers. In contrast, blocking a number on a phone only hides it on your personal device- it does not prevent the scammer from contacting others using new numbers,” the statement said.